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RK3399使用rtl8821cu wifi芯片

RK3399使用rtl8821cu wifi芯片

作者: Mr_Michael | 来源:发表于2020-10-27 18:02 被阅读0次

    一、添加内核驱动

    github rtl8821CU driver

    1.下载驱动文件

    # 将官方驱动程序下载到内核drivers/net/wireless/realtek路径下
cp -r rtl8821CU_rtl8731AU_WiFi_linux_v5.8.1.4_36409.20200313_COEX20191014-4141  kernel/drivers/net/wireless/realtek/rtl8821cu

    2.修改Makefile

    122c122
< CONFIG_PLATFORM_I386_PC = y
---
> CONFIG_PLATFORM_I386_PC = n
147a148
> CONFIG_PLATFORM_ARM_RK3399 = y
1683a1685,1696
> 
> ifeq ($(CONFIG_PLATFORM_ARM_RK3399), y)
> EXTRA_CFLAGS  += -DCONFIG_LITTLE_ENDIAN -DCONFIG_IOCTL_CFG80211 -DRTW_USE_CFG80211_STA_EVENT -DCONFIG_CONCURRENT_MODE -DCONFIG_PLATFORM_ROCKCHIPS
> ARCH := arm64
> #CROSS_COMPILE := /home/michael/project/rk3399/linux-sdk-jiangxing/prebuilts/gcc/linux-x86/aarch64/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
> #KSRC := /home/michael/project/rk3399/linux-sdk-jiangxing/kernel
> MODULE_NAME := rtl8821cu
> endif
>

    3.修改上一级Makefile

    diff --git a/drivers/net/wireless/realtek/Makefile b/drivers/net/wireless/realtek/Makefile
index 9c78deb..cda39ff 100644
--- a/drivers/net/wireless/realtek/Makefile
+++ b/drivers/net/wireless/realtek/Makefile
@@ -6,4 +6,5 @@ obj-$(CONFIG_RTL8180)           += rtl818x/
 obj-$(CONFIG_RTL8187)          += rtl818x/
 obj-$(CONFIG_RTLWIFI)          += rtlwifi/
 obj-$(CONFIG_RTL8XXXU)         += rtl8xxxu/
+obj-$(CONFIG_RTL8821CU)                += rtl8821cu/

    4.修改上上级Kconfig

    diff --git a/drivers/net/wireless/Kconfig b/drivers/net/wireless/Kconfig
index d2735fa..6ede54d 100644
--- a/drivers/net/wireless/Kconfig
+++ b/drivers/net/wireless/Kconfig
@@ -287,6 +287,7 @@ source "drivers/net/wireless/rt2x00/Kconfig"
 source "drivers/net/wireless/realtek/rtl8xxxu/Kconfig"
+source "drivers/net/wireless/realtek/rtl8821cu/Kconfig"
 source "drivers/net/wireless/rockchip_wlan/Kconfig"

    5.修改配置选项

    --- a/arch/arm64/configs/jiangxing_um1b_mg_rk3399_defconfig
+++ b/arch/arm64/configs/jiangxing_um1b_mg_rk3399_defconfig
@@ -176,9 +176,11 @@ CONFIG_BT_HCIBFUSB=y
+CONFIG_CFG80211=y
+CONFIG_MAC80211=y
@@ -229,10 +231,7 @@ CONFIG_HOSTAP=y
-CONFIG_WL_ROCKCHIP=y
-CONFIG_WIFI_LOAD_DRIVER_WHEN_KERNEL_BOOTUP=y
-CONFIG_AP6XXX=y
-CONFIG_RTL8188EU=y
+CONFIG_RTL8821CU=y

    二、系统操作wifi模块

    1.查看系统wifi设备

    • 加入WG217驱动后，系统将新增wlan0(wlx30eb1f1f3b8f)和wlan1两个接口设备。wlan0用于station模式，wlan1用于AP模式。
    $ lsusb |grep Realtek
Bus 007 Device 003: ID 0bda:c811 Realtek Semiconductor Corp.

$ dmesg |grep rtl8821cu
[    1.440770] RTW: rtl8821cu v5.8.1.4_36402.20200302_beta
[    1.441666] RTW: rtl8821cu BT-Coex version = COEX20191014-4141
[    1.442702] usbcore: registered new interface driver rtl8821cu
[    3.339141] rtl8821cu 7-1.1:1.0 wlx30eb1f1f3b8f: renamed from wlan0

$ ls /sys/class/net/
eth0  eth1  lo  sit0  usb0  usb1  wlan1  wlx30eb1f1f3b8f  wwan0  wwan1
    # 出现wlan0和wlan1，其中wlan0被系统重命名为wlx30eb1f1f3b8f

    2.使用wifi模块连接热点

    iwlist/iwconfig/iw命令

    arm 使用wpa_cli连接wifi

    1）基础信息

    sudo apt-get install wireless-tools
sudo apt-get install iw

sudo ifconfig wlx30eb1f1f3b8f
# 搜索附近wifi
sudo iwlist wlx30eb1f1f3b8f scanning
          Cell 03 - Address: 74:F8:DB:63:A1:6C
                    ESSID:"4G-WIFI-A16C"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    Extra:wpa_ie=dd160050f20101000050f20401000050f20401000050f202
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Extra:
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=60/100  Signal level=-32 dBm  
                    Extra:fm=0003

#  显示频道信息
sudo iwlist wlx30eb1f1f3b8f frequen
wlx30eb1f1f3b8f  32 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Channel 12 : 2.467 GHz
          Channel 13 : 2.472 GHz
          Channel 36 : 5.18 GHz
          Channel 40 : 5.2 GHz
          Channel 44 : 5.22 GHz
          Channel 48 : 5.24 GHz
          Channel 52 : 5.26 GHz
          Channel 56 : 5.28 GHz
          Channel 60 : 5.3 GHz
          Channel 64 : 5.32 GHz
          Channel 100 : 5.5 GHz
          Channel 104 : 5.52 GHz
          Channel 108 : 5.54 GHz
          Channel 112 : 5.56 GHz
          Channel 116 : 5.58 GHz
          Channel 120 : 5.6 GHz
          Channel 124 : 5.62 GHz
          Channel 128 : 5.64 GHz
          Channel 132 : 5.66 GHz
          Channel 136 : 5.68 GHz
          Channel 140 : 5.7 GHz
          Current Frequency:5.785 GHz
# 显示连接速度
sudo iwlist wlx30eb1f1f3b8f rate 
wlx30eb1f1f3b8f  4 available bit-rates :
      1 Mb/s
      2 Mb/s
      5.5 Mb/s
      11 Mb/s
      Current Bit Rate:434 Mb/s
      
# 显示无线网络设备信息
iwconfig
wlan1     unassociated  Nickname:"<WIFI@REALTEK>"
          Mode:Managed  Frequency=5.785 GHz  Access Point: Not-Associated   
          Sensitivity:0/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=0/100  Signal level=0 dBm  Noise level=0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
          
wlx30eb1f1f3b8f  IEEE 802.11AC  ESSID:"jxoffice5g"  Nickname:"<WIFI@REALTEK>"
          Mode:Managed  Frequency:5.785 GHz  Access Point: 74:05:A5:82:58:B4   
          Bit Rate:434 Mb/s   Sensitivity:60/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:****-****-****-****-****-****-****-****   Security mode:open
          Power Management:off
          Link Quality=86/100  Signal level=-60 dBm  Noise level=0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

    2）使用配置文件默认连接wifi热点

    wpa_supplicant是wifi客户端（client）加密认证工具，wpa_supplicant支持wep、wpa、wpa2等完整的加密认证，而iwconfig只能支持wep。

    wpa_supplicant运行于后台，它需要借助控制台工具wpa_cli来进行手动操作，使用wpa_cli来搜索、设置、和连接网络。

    • 常用命令
    usage:
  wpa_supplicant [-BddhKLqqstuvW] [-P<pid file>] [-g<global ctrl>] \
        [-G<group>] \
        -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] [-p<driver_param>] \
        [-b<br_ifname>] [-e<entropy file>] [-f<debug file>] \
        [-o<override driver>] [-O<override ctrl>] \
        [-N -i<ifname> -c<conf> [-C<ctrl>] [-D<driver>] \
        [-m<P2P Device config file>] \
        [-p<driver_param>] [-b<br_ifname>] [-I<config file>] ...]

drivers:
  nl80211 = Linux nl80211/cfg80211
  wext = Linux wireless extensions (generic)
  wired = Wired Ethernet driver
  none = no driver (RADIUS server/WPS ER)
options:
  -b = optional bridge interface name
  -B = run daemon in the background
  -c = Configuration file
  -C = ctrl_interface parameter (only used if -c is not)
  -d = increase debugging verbosity (-dd even more)
  -D = driver name (can be multiple drivers: nl80211,wext)
  -e = entropy file
  -f = log output to debug file instead of stdout
  -g = global ctrl_interface
  -G = global ctrl_interface group
  -h = show this help text
  -i = interface name
  -I = additional configuration file
  -K = include keys (passwords, etc.) in debug output
  -L = show license (BSD)
  -m = Configuration file for the P2P Device interface
  -N = start describing new interface
  -o = override driver parameter for new interfaces
  -O = override ctrl_interface parameter for new interfaces
  -p = driver parameters
  -P = PID file
  -q = decrease debugging verbosity (-qq even less)
  -s = log output to syslog instead of stdout
  -t = include timestamp in debug messages
  -T = record to Linux tracing in addition to logging
       (records all messages regardless of debug verbosity)
  -u = enable DBus control interface
  -v = show version
  -W = wait for a control interface monitor before starting
example:
  wpa_supplicant -Dnl80211 -iwlan0 -c/etc/wpa_supplicant.conf

    sudo vim /etc/wpa_supplicant/wpa_supplicant.conf
# 填入以下信息
country=CN
ctrl_interface=/var/run/wpa_supplicant
update_config=1

network={
        ssid="4G-WIFI-A16C"
        psk="12345678"
        scan_ssid=1
        proto=RSN WPA2
        key_mgmt=WPA-PSK
        pairwise=TKIP
        group=TKIP
}

# 精简写法
ctrl_interface=/var/run/wpa_supplicant
update_config=1
country=CN

network={
    ssid="4G-WIFI-A16C"
    psk="12345678"
}

# 注意：如果需要修改WIFI网络名称和密码只需修改上文的：
        ssid="JX-4423"
        psk="jiangxing123"
# 或者
        ssid="jxoffice5g"
        psk="jiangxing111222333"
    • 运行wpa_supplicant
    sudo wpa_supplicant -B -c /etc/wpa_supplicant/wpa_supplicant.conf -i wlx30eb1f1f3b8f -D nl80211
Successfully initialized wpa_supplicant

$ iwconfig wlx30eb1f1f3b8f
wlx30eb1f1f3b8f  IEEE 802.11bgn  ESSID:"4G-WIFI-A16C"  Nickname:"<WIFI@REALTEK>"
          Mode:Managed  Frequency:2.462 GHz  Access Point: 74:F8:DB:63:A1:6C   
          Bit Rate:150 Mb/s   Sensitivity:29/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:****-****-****-****-****-****-****-****   Security mode:open
          Power Management:off
          Link Quality=98/100  Signal level=-29 dBm  Noise level=0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
         
# 动态分配ip
sudo dhclient wlx30eb1f1f3b8f

$ ifconfig wlx30eb1f1f3b8f
wlx30eb1f1f3b8f: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.3.69  netmask 255.255.255.0  broadcast 192.168.3.255
        inet6 fe80::32eb:1fff:fe1f:3b8f  prefixlen 64  scopeid 0x20<link>
        ether 30:eb:1f:1f:3b:8f  txqueuelen 1000  (Ethernet)
        RX packets 56  bytes 359297 (359.2 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 15  bytes 15095 (15.0 KB)
        TX errors 0  dropped 94 overruns 0  carrier 0  collisions 0
    • 停止wpa_supplicant，断开wifi连接
    # sudo apt-get install psmisc
sudo killall dhclient wpa_supplicant
# 会自动删除旧节点
# sudo rm /var/run/wpa_supplicant/wlx30eb1f1f3b8f

    3）使用wpa_cli来搜索、设置、和连接网络

    使用wpa_supplicant连接wifi热点

    # 需要预先启动wpa_supplicant
sudo wpa_supplicant -B -c /etc/wpa_supplicant/wpa_supplicant.conf -i wlx30eb1f1f3b8f -D nl80211

# 扫描热点
sudo  wpa_cli -i wlx30eb1f1f3b8f scan
OK
# 列出热点
sudo  wpa_cli -i wlx30eb1f1f3b8f scan_results
74:f8:db:63:a1:6c   2462    -28 [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]  4G-WIFI-A16C
7a:05:a5:82:58:b4   5785    -58 [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]  jxtest5g
d0:76:e7:5e:44:28   5745    -59 [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][ESS]    TP-LINK_5G_4423
74:05:a5:82:58:b4   5785    -59 [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][ESS]    jxoffice5g
76:40:bb:3c:fb:0d   5785    -64 [WPA2-PSK-CCMP][WPS][ESS]   DIRECT-0d-HP M227f LaserJet
74:05:a5:82:58:af   2412    -48 [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][ESS]    jxoffice
d0:76:e7:5e:44:23   2462    -51 [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][ESS]    JX-4423

# 增加一个网络连接：
sudo wpa_cli -i wlx30eb1f1f3b8f add_network
# 配置WiFi热点的名称ssid，注意双引号外要有单引号
sudo wpa_cli -i wlx30eb1f1f3b8f set_network 1 ssid '"jxoffice5g"'
# 配置WiFi热点的密码psk
sudo wpa_cli -i wlx30eb1f1f3b8f set_network 1 psk '"jiangxing111222333"'
# 使能连接
sudo  wpa_cli -i wlx30eb1f1f3b8f enable_network 1
# 失能连接
sudo wpa_cli -i wlx30eb1f1f3b8f disable_network 1
# 断开热点：
sudo wpa_cli -i wlx30eb1f1f3b8f disconnect
# 重连热点：
sudo wpa_cli -i wlx30eb1f1f3b8f reconnect
# 删除热点：
sudo wpa_cli -i wlx30eb1f1f3b8f remove_network 1
# 保存连接
sudo wpa_cli -i wlx30eb1f1f3b8f save_config
# 保存热点后，配置文件会自动更新
$ cat  /etc/wpa_supplicant/wpa_supplicant.conf 
/*
ctrl_interface=/var/run/wpa_supplicant
update_config=1
country=CN

network={
    ssid="4G-WIFI-A16C"
    psk="12345678"
    disabled=1
}

network={
    ssid="jxoffice5g"
    psk="jiangxing111222333"
}
*/

# 查看已有连接
sudo wpa_cli -i wlx30eb1f1f3b8f list_network
network id / ssid / bssid / flags
0   4G-WIFI-A16C    any [DISABLED]
1   jxoffice5g  any [CURRENT]
# 选择连接
sudo wpa_cli -i wlx30eb1f1f3b8f select_network 1

$ iwconfig wlx30eb1f1f3b8f
wlx30eb1f1f3b8f  IEEE 802.11AC  ESSID:"jxoffice5g"  Nickname:"<WIFI@REALTEK>"
          Mode:Managed  Frequency:5.785 GHz  Access Point: 74:05:A5:82:58:B4   
          Bit Rate:434 Mb/s   Sensitivity:62/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:****-****-****-****-****-****-****-****   Security mode:open
          Power Management:off
          Link Quality=61/100  Signal level=-62 dBm  Noise level=0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:

# 切换网络需要重新分配ip
sudo dhclient wlx30eb1f1f3b8f

# 查看热点状态   
sudo wpa_cli -i wlx30eb1f1f3b8f status
bssid=74:05:a5:82:58:b4
freq=5785
ssid=jxoffice5g
id=1
mode=station
pairwise_cipher=CCMP
group_cipher=TKIP
key_mgmt=WPA2-PSK
wpa_state=COMPLETED
ip_address=10.50.1.58
address=30:eb:1f:1f:3b:8f
uuid=a66aa087-2085-555d-866d-06d4b544b59f

    3.wifi模块的AP模式

    1）安装网络工具

    sudo apt-get install -y hostapd
sudo apt-get install libnl-3-dev
sudo apt-get install -y dnsmasq
sudo apt-get install -y isc-dhcp-server

    2）设置分配IP的范围

    sudo vim /etc/dhcp/dhcpd.conf
subnet 192.168.2.0 netmask 255.255.255.0 {
    range 192.168.2.2 192.168.2.254;
    option domain-name-servers 192.168.2.1;
    option routers 192.168.2.1;
}

    3）使用hostapd创建普通热点

    开启普通热点，只有一个无线网卡，无法上网的热点

    官方配置文件

    • 2.4G频段配置
    sudo vim /etc/hostapd/rtl_hostapd_2G.conf

interface=wlan1
ctrl_interface=/var/run/hostapd
ssid=RK3399-UM1B-2G
channel=6
wpa=2
wpa_passphrase=12345678
# wpa_key_mgmt=WPA-PSK

# Device Name
# User-friendly description of device; up to 32 octets encoded in UTF-8
device_name=RTL8821CU

# Model Name
# Model of the device (up to 32 ASCII characters)
model_name=RTW_SOFTAP

driver=nl80211
    • 5G频段配置
    sudo vim /etc/hostapd/rtl_hostapd_5G.conf

interface=wlan1
ctrl_interface=/var/run/hostapd
ssid=RK3399-UM1B-5G
channel=36
wpa=2
wpa_passphrase=12345678

# Device Name
# User-friendly description of device; up to 32 octets encoded in UTF-8
device_name=RTL8821CU

# Model Name
# Model of the device (up to 32 ASCII characters)
model_name=RTW_SOFTAP

driver=nl80211
    • 启动hostapd和dhcpd
    sudo ifconfig wlan1 up
 
sudo  hostapd /etc/hostapd/rtl_hostapd_2G.conf -B
Configuration file: /etc/hostapd/rtl_hostapd_2G.conf
Using interface wlan1 with hwaddr 32:eb:1f:1f:3b:8f and ssid "RK3399-UM1B-2G"
wlan1: interface state UNINITIALIZED->ENABLED
wlan1: AP-ENABLED 

#sudo hostapd /etc/hostapd/rtl_hostapd_5G.conf -B

sudo fconfig wlan1 192.168.2.1

sudo dhcpd -cf /etc/dhcp/dhcpd.conf wlan1
Internet Systems Consortium DHCP Server 4.3.5
Copyright 2004-2016 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/
Config file: /etc/dhcp/dhcpd.conf
Database file: /var/lib/dhcp/dhcpd.leases
PID file: /var/run/dhcpd.pid
Wrote 1 leases to leases file.
Listening on LPF/wlan1/32:eb:1f:1f:3b:8f/192.168.2.0/24
Sending on   LPF/wlan1/32:eb:1f:1f:3b:8f/192.168.2.0/24
Sending on   Socket/fallback/fallback-net

$ iwconfig wlan1
wlan1     IEEE 802.11a  ESSID:"RK3399-UM1B-2G"  Nickname:"<WIFI@REALTEK>"
          Mode:Master  Frequency:5.785 GHz  Access Point: 32:EB:1F:1F:3B:8F   
          Bit Rate:78 Mb/s   Sensitivity:99/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=1/100  Signal level=-99 dBm  Noise level=0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
          
# 查看wlan1信息
sudo iw wlan1 info
Interface wlan1
    ifindex 6
    wdev 0x100000001
    addr 32:eb:1f:1f:3b:8f
    ssid RK3399-UM1B-2G
    type AP
    wiphy 1
    txpower 12.00 dBm

    此时用STA设备可以扫描到AP的SSID，输入密码能正常连接，但不能通过AP上网。

    • 关闭AP热点
    sudo killall dhcpd hostapd

    4）设置桥接

    arm使用hostapd创建热点

    sudo apt-get  install bridge-utils

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